And also:

On Monday, December 3, 2012, Uwe Ligges wrote:

>
>
> On 03.12.2012 11:14, moriah wrote:
>
>> Hi,
>>
>> I have an R script which is time consuming because it has two nested loops
>> in it of at least 5000 iterations each, I have tried to use the multicore
>> package but id doesn't seem to improve the elapsed time of the script(a
>> shorter script for example) and I can't use the mcapply because of
>> technical
>> reasons.
>>
>
> Errr, but otherwise multicore does not have an effect ...
>
> See package "parallel" that offers various functions for parallel
> computations. We cannot help much more if you do not tell us what the
> technical reasons are why mcapply() does not work.


If the work you are doing within each iteration of the loop is trivial, you
will likely even see a decrease in performance if you try to parallelize it.

Without more info from you regarding your problem, there's little we can do
to help, tho.

 -Steve



-- 
Steve Lianoglou
Graduate Student: Computational Systems Biology
 | Memorial Sloan-Kettering Cancer Center
 | Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact

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